Machine foe scouring metal



(No Model.) 3 sheets-Sheet 1. E. O. GOSS. MACHINE FOR SOOURING METAL.

Patented Apr. 14,1891;

(No Model.) 3 Sheets-Sheet 2.

E. 0. GOSS.

MACHINE FOR SGOURING METAL.

No. 450,456. I Patented Apr. 14, 1891. z

. (No Model.) 3 Sheets-Sheet 3.

E. 0-. GOSS.

. MACHINE FOR SGOURING METAL.

Patented Apr. 14, 1891.

UNITED STATES PATENT OFFICE,

EDXVARD O. GOSS, OF XVATERBURY, CONNECTICUT, ASSIGNOR TO THE SCOVILLMANUFACTURING COMPANY, OF-SAME PLACE.

MACHINE FOR SCOURING METAL.

SPECIFICATION forming part of Letters Patent No. 450,456, dated April14, 1891.

Application filed November 17, 1890. Serial No. 371,667. (No model.)

To aZZ whom it may concern.-

Be it known that I, EDWARD O. Goss, of Waterbury, in the county of NewHaven and State of Connecticut, have invented a new ImprovementinMachines for Scouring Metal; and I do hereby declare the following, whentaken in connection with accompanying three sheets of drawings and theletters of reference marked thereon,to be a full, clear, and exactdescription of the same, and which said drawings constitute part of thisspecification, and represent, ill- Figure 1, a side View of the machinecomplete; Fig. 2, a top or plan View of the same; Fig. 3, a longitudinalcentral section through the machine, on line a w of Fig. 2; Fig. 4, anenlarged View of a portion of the frame, showing the bearings of thefeed-rollers at one end and the bearings for the first pair ofscouring-rollers.

This invention relates to an improvement in machinery for scouring orfinishing the surface of flat metal.

In the manufacture of rolled sheet metal or metal plate preparatory formarket it is in many cases required to perform the operation commonlycalled scouring the surfaces. Various devices have been employed forscouring sheet metal, the most successful being that in which the metalis passed be tween positively-driven scouring-rollers, the metal beingwound upon a reel at one end, tending to draw it through the machine asfast as the operation of scouring is performed. Vhile such an apparatusworks satisfactorily on a long continuous strip of metal, it is not welladapted for metal in comparatively short sheets or metal too thick to bereadily wound upon a reel.

The object of my invention is the construe tion of a machine which maybe adapted to scouring short or independent sheets, plates, or bars ofmetal; and the invention consists in the combination of one series ofsecuringrollers arranged upon stationary axes, asec- 0nd series ofsimilar rollers, arranged above the said first series of rollers, butautomatically adjustable with relation to said first series of rollers,so as to adapt themselves to the varying thickness which may passbetween the two series of rollers, with a pair of feed-rolle rs at thedelivery end of the series of rollers, and a like pair of feed-rollersat the opposite end of the said series of rollers, with pulleys on thearbors of each of the said rollers, and corresponding pulleys at eachend of the machine in connection with the feed-rollers, an endless bandpassing around the said end pulleys and the intermediate roller-pulleys,whereby a like revolution is imparted to all the rollers of the said twoseries, the surface revolution of said two series of rollers being morerapid than that of the surface revolution of the said two sets offeed-rollers, and whereby the feed of the sheet through the rollers isso much slower than the Velocity of revolution of the intermediaterollers, that the said intermediate rollers produce a correspondingrubbing effect upon the surface of the metal passing between them, andas more fully hereinafter described.

A represents the frame of the machine, which is supported on suitablelegs B or otherwise. In suitable stationary bearings C in the frame aseries of rollers D are arranged, (here represented as three,) andrepresented as of equal diameter and all in the same plane.

Directly over the rollers D a like series of rollers E are arranged; butthis second series of rollers are supported in bearings F, which arearranged in vertical guides G in the frame, (see Fig. 4,) and so thateach of the rollers E of the upper series is vertically adjustabletoward or from the corresponding rollers below and each independent ofthe other, their own gravity tending to yieldingly hold them in theirproper relation to the rollers below, and so that as the thickness ofanything passing between the rollers shall vary the upper rollers willadapt themselves accordingly. The rollers of both series should be ofequal diameter. These two series of rollers are the scouring-rollers.

At the entrance end of the machine a pair of feed-rollers H I arearranged, the lower roller being arranged in a fixed bearing J and theupper roller I in a Vertically-adjustable bearing K, (see Fig. 4,) thelatter being provided with a springL and an adjusting-screw M at eachbearing, whereby a yielding pressure may be applied to the roller I.arbor of the lower or fixed roller II a pulley N is arranged,and at theopposite end of the machine there is a like pair of rollers O P, thelower rollerO being supported in stationary bearings and the roller P inyielding bearings the same as that shown and described for the roller Iat the entrance end of the machine. The plane between the feed-rollersat both ends of the machine is in line with that between theintermediate or scouring-rollers. The pressure of the feed-rollers issuch that their frictional hold upon the metal passing between them isso much greater than that of the scouring-rollers that thescouring-rollers may operate upon the surface of the metal withoutinterfering with the advance of metal by the feed-rollers. On the arborof the lower or stationary roller a pulley Q is arranged of the samediameter as that of the pulley N. These pulleys, as here represented,are outside the frame of the ma- On each of the arbors of the lowerchine. series of intermediate rollers a pulley R is arranged, thesepulleys being preferably all of the same diameter, and on the upperseries of rollers like pulleys S are arranged. (See Fig. 1.) The pulleysQ and N are of considerably larger diameter than the pulleys R and S.Around the pulleys Q N and the intermediate pulleys Rand S an endlessband T runs, which connects all the pulleys, the lower run of the bandfrom the pulley N passing up and around the first pulley R of the lowerseries of rollers, thence back, upward, and over the correspondingpulley S of the first roller of the series above, thence down and aroundthe next pulley R of the lower series, thence back up and around thesecond pulley S of the upper series, and so on to and around the pulleyQ, and so that the revolution imparted to the lower rollers will be inthe opposite direction to that of the upper rollers, and so that theadjacent surfaces of the rollers all run in the same advancingdirection; but the size of the pulleys N and Q is such with relation tothe pulleys R and S that the surface velocity of the rollers D and Ewill be considerably greater than the surface velocityof thefeed-rollers at both ends of the machine, the velocity of the saidfeed-rollers being alike at both ends of the machine.

Revolution is imparted to the pulleys from a driving-shaft U, supportedin bearings V on the frame, and carrying, as here represented, a looseand fast pulley NV and X at one end. At the other enda pinionY is madefast to the shaft U, which works into a corresponding gear Z on thearbor of the pulley Q. The direction of revolution of the parts isrepresented by arrows.

In Fig. 2 the same arrangement of pulleys and band is made upon bothsides of the machine, so that power is applied to both ends of therollers.

,In operation power is applied to produce On the the revolution of thefeed-rollers and of the intermediate rollers D and E. The metal to bescoured is passed between the first feedrollers I H at the entrance endof the machine, which forces the metal forward at a velocitycorresponding to the surface travel of the said feed-rollers II I.Thence the metal passes between the first pair of the intermediate orscouring rollers, thence through the second pair, and so on until thefeed-rollers O P at the opposite end are reached, the metal being insurface contact with all the rollers, the rollers yielding, as beforedescribed, to adapt themselves to thethickness of the metal, and so thatfirm contact is had with both surfaces, the metal being represented inbroken lines, Fig. 3. The surface velocity of the intermediate orscouring rollers being considerably greater than that of the travel ofthe sheet under the action of the feed-rollers, the scouring-rollersproduce a rubbing upon both surfaces of the metal, and so as to scourthose surfaces, any suitable scouring material being applied asdesirable to produce the required result. By the arrangement of twopairs of feed-rollers, one at the entrance and the other at the exit endof the metal, the metal is driven by the first pair of feed-rollersthrough the scouring-rollers until the feed at the opposite end isreached. Then when the last end of the metal has passed from the firstpair of feed-rollers the rollers at the exit end of the machine willcontinue their hold upon the met-a1 and draw it through the machineuntil it finally delivers it complete from the machine. This is theoperation when the metal is of a length somewhat greater than thedistance between the two pairs of feed-rollers; or if the metal be sothickas to possess the requisite rigidity the metal may be shorter, asecond piece of metal abutting against the first, so as to force saidfirst piece of metal through until it is taken by the exit teed-rollers,the machine being thus adapted to scouring thick rigid plates or bars.

By this construction of machine the operator has nothing to do butsimplyintroduce one end of the metal to the entrance feed-rollers. From thattime the machine takes care of itself and the metal is deliveredcomplete from the other end of the machine. The operator may continuefeeding pieces or sheets 1 in succession, introducing the forward end ofone as soon as the last end of the preceding piece or sheet shall havepassed beyond the entrance feed-rollers.

To adjust the tension of the endless band which drives the severalrollers, an idler a is hung upon an axis 1) in a bracket d, hinged tothe frame, as at e, and so as to swing in a vertical plane, the positionof the idler a. being between one of the feed-roller pulleys and thenext pulley in the series of scouring-rollers and so that the band willrun over the said idler. The bracket is hinged so that it may swing upand down in a vertical plane, and the pulley stands directly in the pathof the band, as seen in Fig. 1. The bracket is provided with a suitablehandle f and is also constructed with a toothed segment g, the teeth ofwhich are adapted to engage a dog h on the frame, and so that as thepulley is raised to increase the tension a corresponding tooth ofthesegment will engage the said dog and hold the pulley at any point towhich it may be set; or whenever it is desired to lessen or remove thetension the segment is thrown up from the dog, when the idler will drop,as seen in broken lines, Fig. 1. This tension device may be applied toincrease the.

pressure of the upper series of rollers toward the lower seriesthat isto say, if a greater pressure is required upon the metal between thescouring-rollers the idler is raised to increase the tension of theband, and as the band practically forms loops around the upper and lowerrollers such increased tension serves to draw the rollers more closelytogether and to increase the pressure between the rollers; or theremoval of the tension, as indicated in broken lines, Fig. 1, will soloosen the band that the revolution of the intermediate rollers maypractically cease. Thus the operation of the scouring-rollers is at alltimes within the control of the operator.

From the foregoing it will be understood that I do not claim, broadly, amachine for scouring sheet metal, which consists of an upper and a lowerseries of driven scouring-roll- ,rollers and to the said two series ofrollers,

the surface revolution of the said series of rollers being more rapidthan the surface revolution of the said feed-rollers, substantially asdescribed.

2. The combination of a series of rollers arranged in stationarybearings, a correspond.- ing series of rollers arranged in yieldingbearings above the said series of rollers, and a pair of feed-rollers ateach end of the said series of rollers, one of each pair of feed-rollersbeing arranged in a stationary bearing, and the other roller of each ofsaid pairs arranged in a yielding bearing, a pulley on the arbor of eachstationary feed-roller and a corresponding pulley on the arbor of eachof the rollers of the said two series, an endless band passing aroundthe two pulleys of the feedrollers and one run of the band alternatelyaround the pulleys of the said two series of rollers, the diameters ofthe several pulleys being such with relation to each other that thesurface velocity of the rollers of the said two series will be morerapid than the surface velocity of the said feed-rollers, but all in thesame working direction, substantially as described.

3. In a machine for securing metal, a series of rollers arranged instationary bearings, a corresponding second series of rollers arrangedabove the first series 0f,rol1ers,but in yielding bearings, a pair offeed-rollers at each end of the said two series of rollers, one of eachof the pairs of feed -rollers being in a stationary bearing, and theother roller of the said pairs of feed-rollers arranged in a yieldingbearing, the stationary rollers provided each with a pulley upon itsarbor, and the two series of rollers each provided with a correspondingpulley, an endless band around the pulleys of the-said feed-rollers, onerun of said band passing alternately around the pulleys of the said twoseries of rollers, and an adjustable idler arranged to bear upon thesaid band between one of the feed-roller pulleys and the next roller ofthe series, substantially as and for the purpose described.

In testimony whereof I have signed this specification in the presence oftwo subscribin g witnesses.

EDWARD O. GOSS.

\Vitnesses:

T. R. HYDE, J r., M. L. SPERRY.

